Sand-grinding apparatus.



W. S. BICKLEY.

SAND GRINDING APPARATUS.

-APPLlcATIoN FILED FEB.17,1914.

INVENTOR COLUMBIA PLANOGWH ConWASUINmN D- C.

W. S. BICKLEY. SAND GmNmNG APPARATUS.

APPLICATION FILED FEB. 17. I9I4.

1,147,362. Patented July 2o, 1915.

3 SHEETS-SHEET 2.

WITNESSES /NVENToR ML e zd f l BY I M ATTORNEY coLuMBlA PLANOORAPH Co.. WASHINGTON, D. C.

W. S. BICKLEY.

SAND GRINDING APPARATUS.

APPLICATION FILED FEB. II, |914.

1,147,362. Patented July 2o, 1915.

3 SHEETS-SHEET 3.

. INVENTOR lllTIYEASSZfS/ I BY t v I t ATTORNEY CULUMBXA yl-ANOGRAPH CO.. WASHINGTON. D- C WALTER s. BICKLEY, oF/ciinsrnn, PENNSYLVANIA.

sAND-GRINDING APPARATUS.

To all whom t may concern.'

` y Be it known that I, /VALTER S. BIGKLEY, a citizen of the United States, residing inv Chester, county of Delaware, State of Pennsylvania, have invented certain new and useful Improvements in Sand-Grinding YApparatus, of which'the following is a specification.

My invention relates to sand grinding or sand crushing machines, or machines for operating upon earths or other materials.

My improved machine vis particularly adapted to the grinding or preparation of molding sand, such as used in steel or other foundries. l

It is the object of my invention to provide a machine,for operating upon sand or other material, which shall provide means for rolling sand or other material, miX it or turn it during` treatment, and, at will, deliver the same out of the machine, it being particularly my object to provide such means whichy are simple in structure yet rugged, and eicient in operation. Y

My invention resides in a machine of the character hereinafter described.

For an illustration of one of the forms my y invention may take reference may be had to the accompanying drawings7 in which:

Figure 1 is a top plan view of the ma`v chine. Fig. 2 is a longitudinal "sectional view, some parts in elevatiom'taken on the line A-A of Fig. l. Fig. 2a is a fragmentary sectional view, partly in elevation, showing a thrust bearing for a roller. Fig.- 3 is a bottom plan view, some parts in section,`taken on the line B B of Fig. 2. Fig. e is a fragmentary side elevation Iofthe Ashovel and neighboring parts., Fig. 5r is a vertical sectional View, some parts in eleva tion, taken on the line C-C of Fig. 1.

In the drawings, 1 is a base plate pi'o-` vided with pedestals 2 upon which is mounted any electric or other lsuitable moto'rlM on whose rotatable shaft 3 is a pinion -1 Vwhich drives the sprocket chain or belt 5 which in turn drives thev gear 6 secured upon the shaft 7 having bearings 8 carried by the lbase plate 1. On one end of the shaft 7 is a bevel pinion 9 which meshes with the bevel gear 10 which may be in sections, as shown in Fig. 3, and secured to the member 11 forms"V ing the bottom of a pan having the vertical rim 12, the rim 12 being secured by bolts 13 to the bottom 11, the bolts 13 extending through an outwardly turned flange on the Application inea February 17, 1914. seriai No. 8`19,139.`

`Specification of Letters Patent. i Patented July 20, 1915..

bottom of the rim y12. rllhe bottom member 11 carries a central cylindrical bearing studj le which serves simply as a centering device .forthe member `11. The stud 14 has therel onfabearing sleeve 15 which rotates within the stationary bushingl carried in the boss 17 on the base plate 1."' On the base plate 1 i is acii'cular track18, whose surface preffI erably a portion ofthe vsurface of a1cone` and on the track 8 bear thepreferably conical'rollers 19. These rollers 19 rotate upon and are carried uponfthe outer endsof the spokes or shafts 2O secured at their inner end'slin the hub 21 having a central hole embracing the boss 17', `pins 22 servinggto secure the shafts 2O in the hub 21. 1 A 'nd near the'rollers 19 the shafts 20iare spaced by the circular spacing member 23 Vsecured to the shaftsv 20by'the straps' 211. Assliown! is provided with ai 4 in Fig; 2a. each roller ball thrustl bearing 19a. i

The bottom plate'll ofthe pan rests upon the rollers 19 at the trackway`25,similar to the track 18. It will accordingly. be under! stfod that the pan rests upon and rotates upon the rollers 19 when the member 111s driven by pinion 9 which in turn is vdriven by the motor M. At its center there is secured to the pan bottom 11 the member 26,`

having cover 27, for confining the sand. or material under treatment in an annular path between the outer walls of the member` 26 and the rim 12 of the pan. Surrounding the member 26 is the ring shaped member" 28 securedv to thelbottom plate 11. And bei tween the vririg 28 land the rim 12.0f the are the wearing platesections 29 `secured to Y.

the bottom plate 11, thesesectioiis' being here shown vas four in number and consti# tuting a false'bottom.l i

y Upon the base 1 are" secured the yokesfoi" pedestals 30cto which are-secured the ver@l 'i l tically slotted members 31, and in these ver-` tical slots in members 31engag`ethe mem! bers secured by pins 33 to tlie'shaft34.` Ro'-,

tatable upon the *shaftI 34ffare the hubsv 35` having the flanges 36 each having a tapering or conical rim 37.` y'Andmounted upon.

each hub 35 is amember 38 havinga'tapering or conical ring-39. Bolts 40 pass through members 36 and drawing them together thus securing the wearing shoe wheel members 11 of hard metal capable of better withstanding the wear` incident to the` grinding and crushing of material. The inner sides of these rings 41 are preferably tapered as indicated Yto correspond with the tapering ends 37 and 39. Between the hubs 35 is a sleeve 42, having oil hole 43, which holds the rollers or grinding wheels in the positions indicated.

To the yokes or pedestals 30 are secured the arc shaped housing members 44 which closely embrace the rim 12 of the pan. These members 44 have horizontal inwardly turned flanges 45 extending over the top edge of the pan rim 12. Secured to the members 44 and extending across the pan is the rood or bar 46. And supported at its one end upon the member 44 and at its other end on the bar 46 is a bar 47. Secured to the bar 4G are the sand deflecting members 48. In Fig. 5 the member 49 is'shown secured by set screws 50 to a vertically extending rod or bar 51 which is secured by member 52 to the bar 47. The members 48 are supported on bar 46 by similar means.

Secured to one of the members 44 is the pivot pin o n which is pivoted the handle or arm 54, having counterweight 55. The arm 55 carries the scoop or shovel 5G, as seen in Figs. 1 and 4. The pivot pin 53 is placed in any suitable position, but preferably, as here shown, above and `outside the pan. Near the scoop or shovel 56 is disposed the preferably arc shaped plate 57 secured upon the member 44. To .one side of the plate 57, in the direction .of rotation of the pan, there may beplaced a chutel or spout 5S outside of the pan and carried by the member 44. ln front of this chute 58 may be placed a box 59 or other receptacle for the material de livered from the pan.

The operation is as follows; The motor M having been started, the pan is rotated by pinion driving the gear 10,. The weight of the pan and the parts attached thereto and the sand or other contents insures the pinion 9 remaining in mesh with the gear 10. The pan revolves upon the rollers 19, the central stud I14 serving as va centering device or guide. Sand or other material to be treated is put into the pan and as the pan rotates in the direction of the arrow, Fig. 1, the material is brought beneath the wheels 41 which, due to their frictional engagement with the material, rotate in the direction of the arrows indicated in Fig. 1. These rollers are heavy and crush the sand or other material, or grind it, and as the thickness of the sand in the bottom of the pan varies the rollers 41 rise and fall, the members 32 rising and falling in the slotted members 31. The members 48 and 49 keep deflecting the sand and turning it and mixing it so that all of it sooner or later is operated upon by the rollers 41. Vhen the sand or other material has been sufficiently rolled or ground the attendant raises the handle 54, Fig. 4, from its normal dotted position, to the full line position, whereupon sand or other material will move up along the shovel 56 and be discharged across the top flangel 45 of the member 44 into the chute 58 from which it falls into the box or other receptacle 59, the pan continuing to rotate for this purpose. Then other material or sand is put into the pan and so the operation is continued as long as desired, the contents being removed at will by operation of handle 54. The rims or wheels 41 of the crushing or grinding rollers wear most rapidly on their outside edges. After they have become considerably so worn, they may be interchanged with each other in which case the part of each which had not previously worn so much will now take the greater part of the wear. And the false bottom plates 29 are also preferably of material which will withstand wear, but when worn may be renewed.

The apparatus herein described is completely self contained, in that it may be removed from place to pla-ce, as in a foundry, by a crane, for grinding sand in any part of the foundry.

What l claim is:

In apparatus ofthe character described, the combination with a rotatable pan, of crushing rollers therein, a shovel, a pivotal shaft to which said shovel is secured at its one end, and a lever for rocking said shaft secured to said shaft, the axis of said shaft being disposed above and outside of said pan, said shovel being of greatest width at its unsupported end adapted to lie near the bottom of said pan, one side of said shovel being curved to the shape of the inside of said pan, the opposite edge of said shovel having an upturned flange increasing in height from said unsupported edge toward the pivotal end of said shovel, whereby upon operation of said handle said shovel is caused to engage in the pan contents and be deflected toward the bottom of said pan and to deliver said contents to the upper edge of said pan.

ln testimony whereof l have hereunto aiiixed my signature in the presence of the two subscribing witnesses.

WALTER S. BICKLEY.

N Vitnesses N. B. EVANS, A. S. MARsr-r.

Copies ,or `this petnt may 'pe obtained for live cents each, py addressing the. ommissvoner of Eatents, Washington, D. 0,. 

